Container base



FIG. 1 is a front perspective view from above of a first embodiment of acontainer base having a first height;

FIG. 2 is a rear perspective view thereof from below;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is left side elevation view thereof;

FIG. 8 is a right side elevation view thereof;

FIG. 9 is a front perspective view from above of a second embodiment ofa container base having a second height that is greater than the firstheight;

FIG. 10 is a rear perspective view thereof from below;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a front elevation view thereof;

FIG. 14 is a rear elevation view thereof;

FIG. 15 is left side elevation view thereof; and,

FIG. 16 is a right side elevation view thereof.

CLAIM The ornamental design for a container base, as shown anddescribed.